Half to haeeiet waewood



(No-Model.) 2 Sheets-Sheet 1-.

- S. J. PLANT.

BRICK MAKING MACHINE.

Patented May 9, 1882-.

I No. 257,608.

W'lroesses.

(No Model.) I 2 Sheets8heet 2. V S. J PLANT.

BRICK MAKING MAGHINE'. No. 257,608. 7 Patented May 9,1882.

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N. PETERS, PhoiwLithognpher. Wnfllngtom DC.

l I UNITED STATES PATENT OFFICE.

STEPHEN J. PLANT,'OF YORKVILLE, ONTARIO, CANADA, ASSIGNOR OF ONE- HALF TO HARRIET -WARWOOD, OF SAME PLACE.

BRICK-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 257,608, dated May 9, 1882-.

Application filed November 25, 1881. (No model.)

To all whom tt may concern Be it known that I, STEPHEN JAMES PLANT, a subject of the Queen of Great Britain, residing at the village of Yorkville, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Brick-Making Machinery, of which the following is a specification.

The object of the invention is to provide a simple and efiective brick-machine; and it consists in a horizontal pug-mill arranged to discharge the clay into a compressing-box, having a vertically operated compressor actuated by a crank-shaft situated below the table, and so'arranged that the strain caused by the action of compression is neutralized.

In the drawings, Figure 1 is a perspective view of my improved brick-machine, showing the compressor situated at the end of the horizontal pug-mill. Fig. 2 is a sectional elevation of my improved machine. Fig. 3 is an end viewof the machine when arranged with two compressors, one on each side of the pug-mill and Fig. 4 is a sectional detail, showing the manner of adjusting the table.

In the drawings like letters indicate corresponding parts in each figure.

Ais the main driving-shaft, situated preferably on the end of the pug-mill and driven by suitable means.

B is a bevel-pinion keyed to the main shaft, and meshing with'bevel-wheel O, keyed to the pug-mill shaft D. This shaft is provided with the usual knives or mixers, E, arranged to revolve within the casing F, so as to force the clay while mixing it from the end of the easing at which the hopper G is situated toward the opposite end, where the compressing-box H is located.

I is the compressor, provided with a vertical shaft, 1, perforated with pin-holes, so that it may be adjusted on the cross-head J, to which it is vertically held by the pins. This arrangement permits the ready adjustment of the compressor to suit .the quantity of clay it is desired to admit within the compressing-box. The cross-head J works within vertical guides K, extending from the sides of the compressing-box H,as shown. The guides are braced together by a cross-beam, K, through'a slotted passage-way in which the shaft 1 works.

L are pitmen situated on either side of the machine and connecting the cross-head J with the cranks L upon the wheel, fastened to the cross-shaft M, situated immediately below the compressing-box under the table M and on a vertical center line with the cross-head J In order to permit the ready adjustment of the table M to accommodate the various thicknesses of brick which it may be desired to make, I place cams N on the cross-shaft M, immediately below either side of the table M, as indicated. The cams N are provided with arms N, connected together by the cross-bar N and provided with the pinch-screws N arranged to pinch against the frame 0, which supports the machine. As the cams N work freely upon a shaft, M, they may be readily adjusted thereon by drawing upon the crossbar N thereby raising or lowering the table M, as desired,which may be held in position by screwing the pinch-screws N against the frame 0.

At or about the center of the cross-shaft M I key or otherwise rigidly secure a wheel, 0'', having on its periphery the segment of a gear. This segmental gear on the wheel 0 is arranged to mesh with a spur-wheel, 0 carried on the shaft P, which is supportedon the frame 0, as indicated. This wheel 0' is not rigidly fastened to the shaft P, but is held between a friction-clutch, so that in the event of any unusual strain it will revolve, and thereby prevent the strain being exerted on the wheel 0. The arms I? are keyed or otherwise rigidly secured to the shaft P. These arms are connected by the rods P to the sliding carriage Q. This carriage is drawn'toward the back of the frame on the end of the table M by the weight Q, which is connected to it by a chain or rope, Q. A shaft, R, is.carried in the frame 0, and is provided with a pinion, It, which gears with the spur-wheel R keyed to the shaft M. The shaft R is alsoprovided' with a pulley, R connected to the main driving-shaft A by a chain or belt, It". In this manner the main driving-shaft A not only causes the pug-mill shaft D to revolve, but also connects the machine to the rest of the moving mechanism, which is connected to the shaft R, as hereinbefore described.

In order that the speed of the pug-mill may 7 Having now described the general construe-- tion of myimproved brick-machine, I shall pro ceed briefly to explain its operation.

The clay is dumped in the ordinary way through the hopper G into the casing F, where it is operated upon by the knives or mixers E,

which force the clay toward the compressingbox H, filling it to its utmost capacity, While the compressor I is held open by the cross-head J. As the main shaft A continues to revolve the compressor I descends, compressing the clay into a mold-box, S, previously placed below it. 'as'far as it can be carried by the cranks L it is caused to reascend by the action of the cranks. At this moment the segmental gear When the compressor has descended upon the wheel meshes with the spur-wheel 0 which, beingheld upon the shaft P, causes the said shaft to revolve a given distance, thereby conveying a corresponding movement to the arms 1?, which, being connected by the rods P to the sliding carriage Q, conveys a horizontal forward movement to this carriage. As a mold-box S has been placed upon vor in front of the carriage Q, a forward motion of this carriage carries the mold-box S under the compressing-box H, forcing the box which contains the bricks already pressed out of position, where it can be removed from off the table. V

In the event of any stones which may be mixed with the clay finding'their-way into the I mold-box S while under the compressing-box and projecting above the surface of the moldboX, the said stones would come in contact with the front side of the compressing-box, and thereby injure either the bottom of the side of the compressing-box or the mold-box. In order to prevent this injury I pivot an apron, T, on the bottom of the front side of the compressing-box, and hold it down by springs it. By this arrangement, in the event of the stones projecting above the surface of the mold-box, the apron will hinge back and permit them to pass from below the compressingbox without injuring the box or bottom of the compressor.

That I claim as my invention-is- 1. lh'e shaft M- and eccentric N, the arm N, cross-bar N and set-screw N combined with the table M, and adapted to serve-as set forth.

2. The combination of the adjustable table M and the adjusting means N N N N with the shaft M,.the wheel 0', gear 0 arms or levers P P and weighted sliding carriage- Q, as and for the purposes specified.

Toronto, November 1, 1881.

s. J. PLANT.

Witnesses:

' G. W. BALDWIN, H. H. WARREN. 

